CN205297511U - Electric heating steam generating device in pit - Google Patents
Electric heating steam generating device in pit Download PDFInfo
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- CN205297511U CN205297511U CN201521113499.3U CN201521113499U CN205297511U CN 205297511 U CN205297511 U CN 205297511U CN 201521113499 U CN201521113499 U CN 201521113499U CN 205297511 U CN205297511 U CN 205297511U
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- electric heating
- heating steam
- casing
- heating power
- oil pipe
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Abstract
The utility model provides an electric heating steam generating device in pit specifically contains: oil pipe, pump barrel, electric heating steam generator and heating power spiral pipe, wherein electric heating steam generator contains: hollow tube, shroud, casing upper cover plate, casing be apron and casing down, supreme oil pipe, pump barrel and the hollow tube of having connected gradually under and of generating device, the oil pipe lower extreme is located to the pot head on the shroud, and the shroud lower extreme links to each other with the casing upper end, be provided with the water filling port on the oil pipe between shroud upper end and the pump barrel, the shroud locates the pump barrel with the casing cover and the heating power spiral pipe is outside, the casing upper cover plate sets up between shroud lower extreme and casing upper end for keep apart shroud inner space and casing inner space, the casing upper cover plate is equipped with the water inlet, the casing is lapped down to set up to lap under casing lower extreme and casing and is equipped with the gas outlet, the heating power spiral pipe is around locating the hollow tube outside, and heating power spiral pipe one end is met with the water inlet, and the other end meets with the gas outlet for a flowing water turns into the vapours of will pour into into is provided.
Description
Technical field
The utility model relates to a kind of downhole electric heating steam generator of heavy crude heat extraction, is particularly useful for steam soakDownhole electric heating steam raising plant.
Background technology
For heavy crude heat extraction, steam quality is restricting the Main Bottleneck of steam soak, steam flooding and SAGD always. FromSince the seventies in last century, research and the use of downhole steam generator are started to carry out. Downhole steam generator at presentGenerally there are two kinds of forms, the one, the down-hole fuel combustion steam generator that principle is identical with earth's surface steam generator, comprisesHigh-pressure combustion direct heat transfer type and low-pressure combustion indirect heat exchange type, at present comparatively feasible high-pressure combustion direct heat transfer type wellLower steam generator, the 2nd, downhole electric heating steam generator, the three kinds of devices that can read up the literature at present, but be all not suitable forSteam soak.
Prior art Patent 201410040391.X downhole electric heating steam generator is only suitable for steam flooding and SAGD,Too little because of aperture in the time of the stewing well open flow of steam soak steam injection, easily stop up viscous crude and flow into oil pipe, simultaneously its through type electricityHeating tube is because of temperature limited apart from the short fluid heating that makes. Paper " grind by heavy crude heat extraction down-hole electric heating steam generator technologyStudy carefully " two kinds of electrical heating tubing strings mentioning are all not suitable for after the stewing well of steam soak directly open flow, can only pass through lower tubular column,Increase operating cost.
Utility model content
The utility model object is to provide a kind of downhole electric heating steam generator of applicable steam soak, improves down-holeSteam quality, reduces environmental pollution, improves steam injection utilization rate, provides heat for turning the stage of taking out, and improves the rate of extraction of handling up,Increase production and improve productivity to reach, the object of energy-conserving and environment-protective.
For reaching above-mentioned purpose, the utility model specifically provides a kind of downhole electric heating steam raising plant, described dressPut and comprise: oil pipe, pump barrel, electric heating steam generator and heating power helix tube; Wherein said electric heating steam generatorComprise: hollow tube, cover cap, case top lid plate, housing lower cover and housing; Described generating means from top to down successivelyBe connected with oil pipe, pump barrel and hollow tube, crude oil is extracted out to described pump barrel to oil pipe by hollow tube; Described cover cap upper end coverBe located at oil pipe lower end, described cover cap lower end is connected with described housing upper end; State the oil between cover cap upper end and described pump barrelOn pipe, be provided with water filling port, for injecting flowing water; Described cover cap and described case cover are located at outside pump barrel and heating power helix tubePortion; Described case top lid plate is arranged between described cover cap lower end and described housing upper end, for by empty in described cover capBetween and the isolation of described shell intracorporeal space, described case top lid plate is provided with water inlet; Described in described housing lower cover is arranged atHousing lower end and described housing lower cover are provided with gas outlet; Described heating power helix tube is set around described hollow tube outside, instituteState heating power helix tube one end and described water inlet joins, the other end and described gas outlet join, and will inject for providingFlowing water is converted into vapours.
In above-mentioned downhole electric heating steam raising plant, preferred, when described generating means also comprises ground warm compactionMonitor, described ground temperature and pressure real-time monitor is used for monitoring wellhead temperature and/or well head pressure.
In above-mentioned downhole electric heating steam raising plant, preferred, described heating power helix tube gas outlet is also provided with heatGalvanic couple temperature sensor and/or capillary pressure sensor; Described thermocouple temperature sensor is by temperature detection wireBe connected with described ground temperature and pressure real-time monitor; Described capillary pressure sensor is by pressure detecting wire and described groundFace temperature and pressure real-time monitor is connected.
In above-mentioned downhole electric heating steam raising plant, preferred, described enclosure interior is multiple hollow tubes, described inHollow tube top and pump barrel join, and bottom flushes with housing lower cover, for crude oil is inputted to pump barrel.
In above-mentioned downhole electric heating steam raising plant, preferred, described hollow tube top is bell mouth shape.
In above-mentioned downhole electric heating steam raising plant, preferred, described heating power helix tube comprises many helix tubes,The outer winding of described helix tube is provided with hot water radiation wire, and described hot water radiation wire is connected with external power source, for making by loopDescribed hot water radiation wire heats flowing water in described helix tube and produces vapours.
In above-mentioned downhole electric heating steam raising plant, preferred, described water filling port comprises multiple pump upper spring mouths,Described pump upper spring mouth is for injecting flowing water according to hydraulic pressure to described cover cap inside.
In above-mentioned downhole electric heating steam raising plant, preferred, described pump upper spring mouth also comprises: on described pumpSpring mouth is outside equipped with a repaired mouth panel, and described repaired mouth panel is used for sealing described pump upper spring mouth, described repaired mouth panelBe connected by spring with described cover cap, in the time that flowing water hydraulic pressure in described hollow tube arrives predetermined pressure, open described repaired mouth facePlate, makes flowing water inject described cover cap inside.
In above-mentioned downhole electric heating steam raising plant, preferred, described heating power helix tube gas outlet is provided with single currentValve, in order to stop crude oil to flow into described heating power helix tube.
Useful technique effect of the present utility model is: solved current factor of cyclic steam stimulation in heavy oil reservoir shaft bottom steam qualityLow, open flow heats wellbore bottom crude oil latter stage with handling up, and improves the practical problem of rheological characteristic of crude oil. Device adopts note to adoptA tubing string, has reduced the human and material resources and the fund that remove the generation of steam injection string and flow string because of the cycle, hasThe advantages such as the thermal efficiency is high, air pollution is few, corollary equipment is simple.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part,Do not form restriction of the present utility model. In the accompanying drawings:
Fig. 1 is the structural representation of downhole electric heating steam raising plant provided by the utility model;
Fig. 2 is the upper cover plate schematic diagram of downhole electric heating steam raising plant provided by the utility model;
Fig. 3 is the lower cover schematic diagram of downhole electric heating steam raising plant provided by the utility model;
Fig. 4 is the pump upper spring mouth side view of downhole electric heating steam raising plant provided by the utility model;
Fig. 5 is the pump upper spring mouth plane of downhole electric heating steam raising plant provided by the utility model;
Drawing reference numeral
1-surface pump injection system, 2-ground power supply system, 3-ground temperature and pressure tester, 4-cable, 5-twin-core temperaturePress valve under monitoring wire, 6-oil pipe, 7-sleeve pipe, 8-pump barrel, 9-pump, 10-pump upper spring mouth, 11-pump withSteam generator connecting bolt, 12-cover cap, 13-horn mouth, 14-housing, 15-hollow tube, 16-helix tube A,17-helix tube B, 18-heating resistance wire, 19-water inlet A, 20-water inlet B, 21-gas outlet A, 22-Plate washer in gas outlet B, 23-temperature sensor, 24-pressure sensor, 25-upper cover plate, 26-lower cover, 27-,28-packer
Detailed description of the invention
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with embodimentAnd accompanying drawing, the utility model is described in further details. At this, illustrative examples of the present utility model and sayingBright for explaining the utility model, but not as to restriction of the present utility model.
Please refer to shown in Fig. 1, the utility model specifically provides a kind of downhole electric heating steam raising plant, described generationDevice comprises: oil pipe 6, pump barrel 8, electric heating steam generator and heating power helix tube 16,17; Wherein said electricity addsHot steam generator comprises: hollow tube 15, cover cap 12, case top lid plate 25, housing lower cover 26 and housing 14;Described generating means is connected with oil pipe 6, pump barrel 8 and hollow tube 15 from top to down in turn, crude oil by hollow tube 15 toDescribed pump barrel 8 to oil pipe 6 is extracted out; Described cover cap 12 upper ends are sheathed on oil pipe 6 lower ends, described cover cap 12 lower ends withDescribed housing 14 upper ends are connected; On oil pipe 6 between described cover cap 12 upper ends and described pump barrel 8, be provided with water filling port,Be used for injecting flowing water; Described cover cap 12 covers at pump barrel 8 and heating power helix tube 16,17 outsides with described housing 14;Described housing 14 upper cover plates 25 are arranged between described cover cap 12 lower ends and described housing 14 upper ends, described in inciting somebody to actionThe isolation of the interior space of the interior space of cover cap 12 and described housing 14, described housing 14 upper cover plates 25 be provided with water inlet 19,20; Described housing 14 lower covers 26 are arranged at described housing 14 lower ends and described housing 14 lower covers 26 are provided with outGas port 21,22; Described heating power helix tube 16,17 is set around described hollow tube 15 outsides, described heating power helix tube16,17 one end and described water inlet 19,20 join, and the other end and described gas outlet 21,22 join, for carryingFor the flowing water of injection is converted into vapours.
In the above-described embodiments, described downhole electric heating steam raising plant is also provided with sleeve pipe 7 and packer 28 outward,Effectively protect described downhole electric heating steam raising plant running by described sleeve pipe 7 and packer 28, prevent instituteState downhole electric heating steam raising plant and suffer unnecessary abrasion and corrosion.
In above-mentioned downhole electric heating steam raising plant, described generating means also comprises surface pump injection system 1, groundElectric power system 2 and ground temperature and pressure real-time monitor 3, described surface pump injection system 1 for extract crude oil or inject flowing water,Described ground power supply system 2 is used to downhole electric heating steam raising plant that electric energy is provided, and when the warm compaction of described ground, supervisesSurvey instrument 3 for monitoring wellhead temperature and/or well head pressure.
Please refer to again shown in Fig. 1, in above-mentioned downhole electric heating steam raising plant, described heating power helix tube 16,17 gas outlets 21,22 that connect are also provided with thermocouple temperature sensor 23 and/or capillary pressure sensor 24;Described thermocouple temperature sensor 23 is connected with described ground temperature and pressure real-time monitor 3 by temperature detection wire 5;Described capillary pressure sensor 24 is connected with described ground temperature and pressure real-time monitor 3 by pressure detecting wire 5.
Please refer to shown in Fig. 1 and Fig. 2, described upper cover plate concrete structure as shown in Figure 2, is provided with on this upper cover plateMultiple apertures, specifically comprise steam generator upper cover 12 and water inlet 19,20, wherein 19,20 points of water inletsDo not connect described heating power helix tube 16,17; Relevant technical staff in the field is when known, the establishing of described water inlet numberPut quantity identical with the number of described heating power helix tube, therefore, the utility model does not do the limit of water inlet number at thisFixed.
Please refer to shown in Fig. 1 and Fig. 3, described lower cover concrete structure as shown in Figure 3, is provided with on this lower coverHollow tube 15 gateways, gas outlet 21,22 and thermocouple temperature sensor 23 and capillary pressure sensor 24;Wherein said thermocouple temperature sensor 23 can be selected to arrange wherein with capillary pressure sensor 24 according to actual needsOne or two all arranges, and its particular location also can actual conditions be selected, and the utility model does not limit at this;In view of described gas outlet number is identical with described water inlet number, be all to occur according to the number of described heating power helix tubeChange, therefore, the utility model does not do the restriction of gas outlet number at this.
In the utility model one preferred embodiment, described housing 14 inside are multiple hollow tubes 15, described hollowManage 15 tops and pump barrel 8 joins, bottom flushes with housing 14 lower covers 26, for crude oil being inputted to pump barrel 8.Described hollow tube 15 tops are bell mouth shape. Described heating power helix tube 16,17 comprises many helix tubes, described spiralPipe 16,17 outer windings are provided with hot water radiation wire, and described hot water radiation wire and external power source, for example, with ground power supply system2 are connected by cable 4, produce for make described hot water radiation wire heat the interior flowing water of described helix tube 16,17 by loopHeat-dissipating steam.
Please refer to again shown in Fig. 1, Fig. 4 and Fig. 5, in the above-described embodiments, described water filling port comprises bullet on multiple pumpsSpring mouth 10, described pump upper spring mouth 10 is for injecting flowing water according to hydraulic pressure to described cover cap 12 inside. On described pumpSpring mouth 10 also comprises: be outside equipped with a repaired mouth panel 103 at described pump upper spring mouth 10, described repaired mouth panel 103Be used for sealing described pump upper spring mouth 10, described repaired mouth panel 103 is connected by spring 102 with described cover cap 12,In the time that the interior flowing water hydraulic pressure of described hollow tube 15 arrives predetermined pressure, open described repaired mouth panel 103, make flowing water inject instituteState cover cap 12 inside. As shown in Figure 4, its left side is that cover cap 12 right sides are oil pipe 6, described repaired mouth under original statePanel 103 fits in the water filling port aperture of described oil pipe 6, in the time that the interior hydraulic pressure of described oil pipe 6 arrives scheduled pressure value,Described spring 102 is washed open by hydraulic pressure with described repaired mouth panel 103, makes the interior flowing water of oil pipe 6 can flow into cover cap 12In, described pump upper spring mouth planar structure is as shown in Figure 5.
In the utility model one preferred embodiment, described heating power helix tube gas outlet is provided with ball-and-seat, in order to resistanceOnly crude oil flows into described heating power helix tube 16,17, and described ball-and-seat is conventional one-way conduction valve.
With this, the utility model, by above-mentioned downhole electric heating steam raising plant, has solved current heavy crude reservoir steamThe shaft bottom steam quality of handling up is low, and open flow heats wellbore bottom crude oil latter stage with handling up, and improves the actual of rheological characteristic of crude oil and asksTopic. Device adopt note adopts tubing string one time, reduced because of the cycle remove the generation of steam injection string and flow string manpower,Material resources and fund, have the advantages such as the thermal efficiency is high, air pollution is few, corollary equipment is simple.
For clearer explanation downhole electric heating steam raising plant provided by the utility model, below with real workMiddle example, is described further downhole electric heating steam raising plant concrete structure:
The downhole electric heating steam generator device of applicable steam soak provided by the utility model, specifically can be by groundInfusion system 1, ground power supply system 2, ground temperature and pressure tester 3, cable 4, twin-core temperature and pressure monitoring wire 5, pumpCylinder 8, pump upper spring mouth 10, pump and steam generator connecting bolt 11, steam generator upper cover 12, horn mouth13, housing 14, hollow tube 15, helix tube A16, helix tube B16, heating resistance wire 18, water filling entrance A19,Water filling entrance B20, steam (vapor) outlet A21, steam (vapor) outlet B22, temperature sensor 23, pressure sensor 24, shellIn body upper cover plate 25, housing lower cover 26, several groups, plate washer 27 forms. Refer to shown in Fig. 1, Fig. 2 and Fig. 3.
In installation process: first, electric heating steam generator under mounting shaft. Will be with a resistance wire by heating power helix tubeA, from top spiral winding,, is combined together to top around being upwards wound around to heating power helix tube B bottom to bottom, withCable 4 joins, additional waterproof insulation body and armouring. Plate washer in inserting in the middle of two groups of helix tubes, plays fixation.Helix tube and middle baffle plate are put into hollow ring housing, and overhead gage is loaded onto on top, and lower baffle plate is loaded onto in bottom. Horn mouthLower circumference and hollow tube top circumference are soldered, horn mouth top have bolt and pump barrel bottom soldered. On pump barrel, connect oil pipe,Each 1 hole of making a call to, both sides, oil pipe 1m place on pump barrel, for waterflood path, the additional spring in hole is beaten in the time having certain pressureOpen, pressure hour is closed. Steam generator upper cover bottom and the welding of housing top excircle, steam generator upper coverCover the oil pipe 6 outer wall circumference solderings at 1 meter of of portion and spring water injection hole top.
Then, the anti-electrical insulator of the additional waterproof of cable and armouring; Secondly, lower down-hole electric heating steam generator, pump barrelWith the 1st oil pipe, with clamp, cable, temperature and pressure duplex wire are fixed on oil pipe simultaneously, every lower 1 Oil-saving pipe nextIndividual clamp, is fixed on cable, temperature and pressure duplex wire on oil pipe; Moreover refractory metal packer is installed in down-hole.Finally, cable is connected with motor, temperature and pressure duplex wire is connected with ground temperature and pressure tester.
When steam injection: water enters oil pipe 6 from surface pump injection system, under pump, valve 9 is closed. Water is from pump upper spring mouth 10Enter two the water filling entrances 20,21 on the upper cover plate 25 of steam generator shell through steam generator upper cover 12Through electrical heating, flowing water is heated up through heating power helix tube A and heating power helix tube B while flowing, from steam generatorTwo steam (vapor) outlets 21,22 of housing lower cover enter stratum. Steam generator shell lower cover steam outlet hasTemperature and pressure transmitter, passes to voltage stabilizing detector in ground by temperature and pressure data in real time through duplex wire, to control in real time steamEnter the pressure and temperature on stratum; Wherein, pressure is by the pressure control of ground pumping-in equipment 1, and temperature is by surface power supplyThe electric weight control of equipment 2.
When stewing well: stop 1 water filling of surface pump injection system, close surface power supply equipment 2.
When open flow: crude oil through hollow tube 15 by pump barrel 8 and oil pipe 6 extraction ground, two steam (vapor) outlets 21,22Because there being downward ball-and-seat to close, two pump upper spring mouths 10 are because pressure is little of closed condition.
Turn while taking out: lower plunger and sucker rod, carry out oil pumper and normally exploit.
With this, the downhole electric heating steam generator device of a kind of applicable steam soak that the utility model provides, solvesCurrent factor of cyclic steam stimulation in heavy oil reservoir shaft bottom steam quality low, open flow and handle up and heat wellbore bottom crude oil latter stage, improvesThe practical problem of rheological characteristic of crude oil. Device adopts note to adopt tubing string one time, has reduced and has removed steam injection string and production because of the cycleThe human and material resources of the generation of tubing string and fund, have the advantages such as the thermal efficiency is high, air pollution is few, corollary equipment is simple.
Above-described specific embodiment, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effectStep describes in detail, and institute it should be understood that and the foregoing is only specific embodiment of the utility model, and is not used inLimit protection domain of the present utility model, all within spirit of the present utility model and principle, any amendment of making,Be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a downhole electric heating steam raising plant, is characterized in that, described generating means comprises: oil pipe, pumpCylinder, electric heating steam generator and heating power helix tube;
Wherein said electric heating steam generator comprises: hollow tube, cover cap, case top lid plate, housing lower cover and shellBody;
Described generating means is connected with oil pipe, pump barrel and hollow tube from top to down in turn, crude oil by hollow tube to described pumpCylinder to oil pipe is extracted out;
Described cover cap upper end is sheathed on oil pipe lower end, and described cover cap lower end is connected with described housing upper end;
On oil pipe between described cover cap upper end and described pump barrel, be provided with water filling port, for injecting flowing water;
Described cover cap and described case cover are located at pump barrel and heating power helix tube outside;
Described case top lid plate is arranged between described cover cap lower end and described housing upper end, for by empty in described cover capBetween and the isolation of described shell intracorporeal space, described case top lid plate is provided with water inlet;
Described housing lower cover is arranged at described housing lower end and described housing lower cover is provided with gas outlet;
Described heating power helix tube is set around described hollow tube outside, described heating power helix tube one end and described water inlet phaseConnect, the other end and described gas outlet join, and for providing, the flowing water of injection are converted into vapours.
2. downhole electric heating steam raising plant according to claim 1, is characterized in that, described dressPut and also comprise ground temperature and pressure real-time monitor, described ground temperature and pressure real-time monitor is used for monitoring wellhead temperature and/or wellMouth pressure.
3. downhole electric heating steam raising plant according to claim 2, is characterized in that, described heating power spiral shellCoil gas outlet is also provided with thermocouple temperature sensor and/or capillary pressure sensor;
Described thermocouple temperature sensor is connected with described ground temperature and pressure real-time monitor by temperature detection wire;
Described capillary pressure sensor is connected with described ground temperature and pressure real-time monitor by pressure detecting wire.
4. downhole electric heating steam raising plant according to claim 1, is characterized in that, in described housingPortion is multiple hollow tubes, and described hollow tube top and pump barrel join, and bottom flushes with housing lower cover, for by crude oilInput pump barrel.
5. downhole electric heating steam raising plant according to claim 1, is characterized in that, described hollow tubeTop is bell mouth shape.
6. downhole electric heating steam raising plant according to claim 1, is characterized in that, described heating power spiral shellCoil comprises many helix tubes, and outer winding of described helix tube is provided with hot water radiation wire, described hot water radiation wire and external power sourceBe connected, produce vapours for make described hot water radiation wire heat flowing water in described helix tube by loop.
7. downhole electric heating steam raising plant according to claim 1, is characterized in that, described water filling portComprise multiple pump upper spring mouths, described pump upper spring mouth is for injecting flowing water according to hydraulic pressure to described cover cap inside.
8. downhole electric heating steam raising plant according to claim 7, is characterized in that, bullet on described pumpSpring mouth also comprises: described pump upper spring mouth is outside equipped with a repaired mouth panel, and described repaired mouth panel is used for sealing described pumpSpring mouth, described repaired mouth panel is connected by spring with described cover cap, when flowing water hydraulic pressure in described hollow tube arrives predeterminedWhen pressure, open described repaired mouth panel, make flowing water inject described cover cap inside.
9. downhole electric heating steam raising plant according to claim 1, is characterized in that, described heating power spiral shellCoil gas outlet is provided with ball-and-seat, in order to stop crude oil to flow into described heating power helix tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521113499.3U CN205297511U (en) | 2015-12-29 | 2015-12-29 | Electric heating steam generating device in pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521113499.3U CN205297511U (en) | 2015-12-29 | 2015-12-29 | Electric heating steam generating device in pit |
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| Publication Number | Publication Date |
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| CN205297511U true CN205297511U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521113499.3U Active CN205297511U (en) | 2015-12-29 | 2015-12-29 | Electric heating steam generating device in pit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443096A (en) * | 2015-12-29 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground electrical-heating steam generating device |
-
2015
- 2015-12-29 CN CN201521113499.3U patent/CN205297511U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443096A (en) * | 2015-12-29 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground electrical-heating steam generating device |
| CN105443096B (en) * | 2015-12-29 | 2018-07-13 | 中国石油天然气股份有限公司 | Downhole electric heating steam generation facility |
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